CN219222595U

CN219222595U - Lampblack conveying mechanism and range hood

Info

Publication number: CN219222595U
Application number: CN202320242664.3U
Authority: CN
Inventors: 任富佳; 吴童; 郑桐福; 鲍明; 周海昕; 余国成
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-06-20
Anticipated expiration: 2033-02-17

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses an oil smoke conveying mechanism and an oil smoke exhauster. The oil fume conveying mechanism is not limited by space in installation, and ensures the sealing performance of conveying oil fume; the range hood realizes the convenience of disassembly and assembly through the oil fume conveying mechanism.

Description

Lampblack conveying mechanism and range hood

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a lampblack conveying mechanism and a range hood.

Background

The key structure of the fume exhauster is a power system, and the blower rotates to suck fume into the air duct. The existing range hood generally arranges a fan case of a power system at the bottom of a cabinet or inside the cabinet, and the fan in the fan case is close to a user and has obvious noise transmission; in order to solve the problems, some range hoods have a fan case disposed above a suspended ceiling of a kitchen, and the fan is far away from a user and can block part of noise of the fan by using the suspended ceiling. When the kitchen ventilator is installed, if the fan case is firstly connected with the kitchen ventilator and then is installed above a kitchen ceiling, the installation is inconvenient, and the kitchen ventilator is affected by the positioning and the installation operation of the fan case; if install fan machine case in the top of kitchen furred ceiling earlier, because one side of fan machine case and fume exhaust pipeline needs the laminating wall body, this leads to the fact the installation of giving rise to the fact the influence to the fume exhaust pipeline, the connection of fan machine case and fume exhaust pipeline is in one side of laminating wall body and is difficult to realize connecting, and then leads to the fact the influence to fume exhaust pipeline's gas tightness.

Disclosure of Invention

The first object of the utility model is to provide a lampblack conveying mechanism, wherein the installation is not limited by space, the connection installation is easy to realize, and the sealing performance of conveying lampblack is ensured.

To achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a lampblack conveying mechanism, including fan case and pipeline, collection cigarette system is connected to pipeline's one end, the diapire of fan case is provided with the air intake, be provided with air supply channel in the pipeline, air supply channel can communicate the air intake, the wall body is laminated to fan case's a lateral wall, fan case is provided with first installation component, pipeline is provided with second installation component, first installation component is including enclosing to locate first installation department and the first connecting portion of air intake, just first installation department set up in the air intake is close to one side of wall body, second installation component includes second installation department and second connecting portion, first installation department with second installation department looks joint connection, first connecting portion with second connecting portion interconnect.

As a preferable structure of the utility model, the first mounting portion includes a fixing frame, the fixing frame is connected to the bottom wall, the fixing frame is provided with a mounting groove, the second mounting portion includes a rolled flange, and the rolled flange can be clamped in the mounting groove.

As a preferable structure of the present utility model, the first connecting portion includes a connecting boss connected to the bottom wall; the second connecting portion comprises a connecting flange, and the connecting boss is detachably connected with the connecting flange.

As a preferable structure of the present utility model, the first connection portion is provided with a plurality of first connection holes, and the second connection portion is provided with a plurality of second connection holes through which fasteners are screwed to the first connection holes.

As a preferable structure of the present utility model, the plurality of first connection holes are uniformly distributed at intervals, and the plurality of second connection holes and the plurality of first connection holes are arranged in one-to-one correspondence.

As a preferable structure of the utility model, the air inlet is a square hole, the conveying pipeline is a square pipe, the first mounting part extends along one side of the air inlet, and the first connecting part extends along at least one side of the rest sides of the air inlet.

As an optimized structure of the utility model, the oil fume conveying mechanism further comprises a sealing ring, one side edge of the sealing ring is provided with a sealing flanging, the sealing ring is arranged between the fan case and the conveying pipeline, the sealing flanging is sleeved on the outer side of the rolling flanging, and the sealing ring surrounds the air inlet.

As a preferable structure of the present utility model, the conveying pipe further includes a first sealing protrusion, the first sealing protrusion is disposed on the second mounting component, the first sealing protrusion extends along a circumferential direction of the air supply channel, and the sealing ring is provided with a second sealing protrusion, and the second sealing protrusion abuts against the first sealing protrusion.

As a preferable structure of the utility model, the sealing ring is further provided with a partition wall, the partition wall is arranged in the sealing flange to form a buffer cavity, and the partition wall can be attached to the bending part of the rolling flange.

The first object of the utility model is to provide a range hood, wherein a lampblack conveying mechanism is easy to realize connection and installation, and has good sealing performance, so that the lampblack purifying effect of the range hood is ensured.

the utility model provides a range hood, includes above-mentioned oil smoke conveying mechanism, the range hood still includes collection cigarette system, the pipeline keep away from the one end of fan machine case connect in collection cigarette system.

The utility model has the beneficial effects that:

the fan case is provided with a first installation component, the conveying pipeline is provided with a second installation component, the first installation component comprises a first installation part and a first connection part which are arranged around the air inlet, the first installation part is arranged on one side of the air inlet, which is close to the wall, and the second installation component comprises a second installation part and a second connection part. The first installation department and the mutual joint of second installation department are connected, and first connecting portion and second connecting portion interconnect can realize encircling the connection of all directions of air intake, guarantee fan machine case and pipeline connection's reliability and air tightness. The first mounting part and the second mounting part are close to the wall body, and have insufficient space to use tools such as a welding gun or an electric screwdriver, so that the first mounting part and the second mounting part are connected in a clamping manner; when the conveying pipeline is installed, the conveying pipeline is pushed, the first installation part and the second installation part are connected in a clamping mode, and then the first connection part and the second connection part are connected and installed. The first connecting part and the second connecting part can be connected by adopting fasteners such as screws, hoops and the like, and can also be connected by adopting connection modes such as welding and the like. The connection structure and the installation mode between the fan case and the conveying pipeline can be used for installing the conveying pipeline after the fan case is fixed on the wall body, so that the influence on the positioning and the installation of the fan case is avoided, the installation and the connection of the conveying pipeline are more convenient, the limitation of the installation space is avoided, and the air tightness of the oil smoke conveying mechanism is ensured.

The range hood provided by the utility model has the advantages that the fan case and the conveying pipeline of the range hood are connected through the mutual clamping of the first installation part and the second installation part, and the connection between the first connection part and the second connection part is realized, so that the installation of the conveying pipeline and the communication sealing between the air inlet and the air supply channel are realized, the installation method is simple and efficient, the limitation of the installation space is avoided, and the air tightness is better. After the fan case and the conveying pipeline are installed, one end of the conveying pipeline, which is far away from the fan case, is connected with the smoke collecting system, so that the integral installation of the range hood is finished, and the assembly and the disassembly are convenient.

Drawings

FIG. 1 is a schematic diagram of a blower housing according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a sealing ring for connecting a conveying pipeline according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a part of a structure of a conveying pipeline according to an embodiment of the present utility model;

FIG. 4 is a schematic structural view of a seal ring according to an embodiment of the present utility model;

FIG. 5 is a partial cross-sectional view of a transfer conduit provided in an embodiment of the present utility model;

FIG. 6 is an enlarged partial schematic view of portion A of FIG. 5;

fig. 7 is a schematic view of a part of the structure of the oil smoke conveying mechanism provided by the embodiment of the utility model;

FIG. 8 is a partially enlarged schematic illustration of portion B of FIG. 7;

FIG. 9 is an enlarged schematic view of a sealing flange sleeved crimping flange according to an embodiment of the present utility model;

fig. 10 is a schematic diagram of an installation process of the oil smoke conveying mechanism provided by the embodiment of the utility model;

fig. 11 is a schematic diagram II of an installation process of the oil fume conveying mechanism provided by the embodiment of the utility model;

fig. 12 is a schematic diagram III of an installation process of the oil fume conveying mechanism provided by the embodiment of the utility model;

fig. 13 is a schematic structural view of a range hood according to an embodiment of the present utility model.

In the figure:

1. a fan case; 11. an air inlet; 12. a first mounting assembly; 121. a first mounting portion; 1211. a fixing frame; 1212. a mounting groove; 122. a first connection portion; 1221. a connecting boss; 1222. a first connection hole; 13. a bottom wall; 14. a sidewall; 2. a delivery conduit; 21. an air supply channel; 22. a second mounting assembly; 221. a second mounting portion; 2211. rolling and connecting flanging; 222. a second connecting portion; 2221. a connecting flange; 2222. a second connection hole; 23. a first sealing protrusion; 24. a first connection pipe; 25. a second connection pipe; 26. a flexible extension tube; 3. a seal ring; 31. sealing and flanging; 32. a second sealing protrusion; 33. a partition wall; 34. a buffer chamber; 35. a mounting hole;

100. a smoke collecting system; 200. suspended ceiling of room; 300. a top wall; 400. side wall.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1 to 12, an embodiment of the present utility model provides a fume conveying mechanism, which includes a fan case 1 and a conveying pipeline 2. A fan is arranged in the fan case 1; one end of the conveying pipeline 2 is connected with a smoke collecting system 100 (refer to fig. 13), the smoke collecting system 100 can collect cooking fume generated by cookers on a cooking bench, and the fume is conveyed and discharged through the conveying pipeline 2 under the power action of the fan case 1. The bottom wall 13 of the fan case 1 is provided with an air inlet 11, an air supply channel 21 is arranged in the conveying pipeline 2, and the air supply channel 21 can be communicated with the air inlet 11. In this embodiment, the conveying pipeline 2 is formed by sequentially connecting a first connecting pipe 24, a flexible telescopic pipe 26 and a second connecting pipe 25, so as to realize length adjustment of the conveying pipeline 2, and the first connecting pipe 24 at the uppermost end is connected with the fan case 1. Of course, in other embodiments, the conveying pipe 2 may be formed by a single pipe, which is not limited to the present embodiment.

One side wall 14 of the fan case 1 is attached to a wall body, and the air inlet 11 is arranged on one side, close to the side wall 14, of the bottom wall 13. The fan case 1 is provided with a first installation component 12, the conveying pipeline 2 is provided with a second installation component 22, the first installation component 12 comprises a first installation part 121 and a first connection part 122 which are arranged around the air inlet 11, the first installation part 121 is arranged on one side, close to a wall body, of the air inlet 11, and the second installation component 22 comprises a second installation part 221 and a second connection part 222. The first installation part 121 and the second installation part 221 are connected in a clamping manner, the first connection part 122 and the second connection part 222 are connected with each other, so that connection in all directions surrounding the air inlet 11 can be realized, and the connection reliability and air tightness of the fan case 1 and the conveying pipeline 2 are ensured. Since the first mounting portion 121 and the second mounting portion 221 are close to the wall body, there is not enough space to use tools such as a welding gun or an electric screwdriver, and therefore the first mounting portion 121 and the second mounting portion 221 are connected by a snap-fit manner; when the conveying pipe 2 is installed, the conveying pipe 2 is pushed to connect the first installation part 121 and the second installation part 221 in a clamped manner, and then the first connection part 122 and the second connection part 222 are connected and installed. The first connecting portion 122 and the second connecting portion 222 may be connected by a fastener such as a screw or a clip, or may be connected by welding. This kind of connection structure and mounting means between fan machine case 1 and the pipeline 2 can carry out pipeline 2's installation again after fan machine case 1 fixes on the wall body, avoids influencing fan machine case 1's location and installation, and makes pipeline 2's installation connect comparatively conveniently, does not receive installation space restriction, guarantees fume conveyor's gas tightness.

Preferably, the first mounting portion 121 includes a fixing frame 1211, as shown in fig. 1, the fixing frame 1211 is connected to the bottom wall 13, the fixing frame 1211 is provided with a mounting groove 1212, and the second mounting portion 221 includes a crimping flange 2211, and the crimping flange 2211 can be clamped in the mounting groove 1212. It can be appreciated that the first connecting tube 24 is a thin-walled tube, and the end portion is bent outwards to form a rolled flange 2211 with a certain thickness, and the rolled flange 2211 is clamped into the mounting groove 1212 of the fixing frame 1211, so that the connection is reliable. The contact area between the rolling flange 2211 and the mounting groove 1212 is large, so that the conveying pipeline 2 is prevented from falling off. When the conveying pipeline 2 is installed, the attached bottom wall 13 is pushed towards the wall body until the coiled flange 2211 is clamped into the installation groove 1212.

Still further, the first connecting portion 122 includes a connecting boss 1221, as shown in fig. 1, the connecting boss 1221 being connected to the bottom wall 13; the second connection part 222 includes a connection flange 2221, and as shown in fig. 3, the connection boss 1221 and the connection flange 2221 are detachably connected. The connecting flange 2221 is annular, can be attached to the end part of the first connecting pipe 24 and is arranged on the upper side of the rolling connection flange 2211, the connecting flange 2221 and the rolling connection flange 2211 are attached to each other, the strength of the end part of the conveying pipeline 2 is improved, and the deformation of the conveying pipeline 2 is avoided; the connecting boss 1221 protrudes from the bottom wall 13, so that the strength of the air inlet 11 can be increased, and the fan case 1 is prevented from being deformed. It is within the scope of the present application that the connection flange 2221 and the connection boss 1221 may be connected by using fasteners such as screws, clips, or by using a connection method such as welding.

In an embodiment, the first connection portion 122 is provided with a plurality of first connection holes 1222, the second connection portion 222 is provided with a plurality of second connection holes 2222, and a fastener is screwed to the first connection holes 1222 through the second connection holes 2222. Further, a plurality of first coupling holes 1222 are provided at the coupling boss 1221 with a uniform interval; the second connection holes 2222 are disposed on the connection flange 2221, and the plurality of second connection holes 2222 and the plurality of first connection holes 1222 are disposed in one-to-one correspondence. In this embodiment, the fastener is a screw, and the screw passes through the second connection hole 2222 from below the fan case 1 and is screwed to the first connection hole 1222, so as to realize the detachable connection between the connection flange 2221 and the connection boss 1221. The screw connection mode is simple and feasible, and convenient to detach, and when the oil fume conveying structure needs to be maintained, the screw is unscrewed.

In an embodiment, the air inlet 11 is a square hole, the conveying pipeline 2 is a square pipe, the first mounting portion 121 extends along one side of the air inlet 11, and the first connecting portion 122 extends along at least one of the remaining sides of the air inlet 11, as shown in fig. 1; that is, the first connecting portion 122 is located at one or more sides among the remaining sides around the air inlet 11 except the side where the first mounting portion 121 is located, and thus, the fastening member is not affected by the wall body when being mounted. Of course, in other embodiments, the air inlet 11 may be a circular hole, the first mounting portion 121 may extend around the circumferential direction of the air inlet 11 at a certain angle and be disposed near the circumferential side of the wall, and the first connecting portion 122 may extend around the circumferential direction of the air inlet 11 and be far away from the circumferential side near the wall.

Still further, the oil smoke conveying mechanism further comprises a sealing ring 3, as shown in fig. 2 and 4, a sealing flange 31 is arranged on one side edge of the sealing ring 3, the sealing ring 3 is arranged between the fan case 1 and the conveying pipeline 2, the sealing flange 31 is sleeved on the outer side of the rolling flange 2211, and the sealing ring 3 surrounds the air inlet 11. The sealing ring 3 is made of elastic rubber, and the elastic rubber has reliable sealing performance and is not easy to age and deform. Specifically, the sealing ring 3 is provided with mounting holes 35, the mounting holes 35 and the second connecting holes 2222 on the connecting flange 2221 are in one-to-one correspondence, and the fastener can sequentially pass through the second connecting holes 2222, the mounting holes 35 and the first connecting holes 1222, so that the connection between the sealing ring 3 and the fan case 1 as well as the connection between the sealing ring and the conveying pipeline 2 are realized. The sealing flange 31 is sleeved on the outer side of the rolling flange 2211, so that on one hand, the sealing ring 3 is prevented from falling off from the conveying pipeline 2, and on the other hand, the tightness between the first mounting part 121 and the second mounting part 221 can be improved; when the crimping flange 2211 is clamped into the mounting groove 1212, the sealing flange 31 is disposed between the crimping flange 2211 and the fixing frame 1211, and the sealing flange 31 can fill the gap of the mounting groove 1212, so as to increase the sealing performance of the clamping between the first mounting portion 121 and the second mounting portion 221.

As a preferred aspect, the conveying pipe 2 further includes a first sealing protrusion 23, as shown in fig. 5 and 6, the first sealing protrusion 23 is provided on the second mounting assembly 22, and the first sealing protrusion 23 extends along the circumferential direction of the air supply passage 21; the seal ring 3 is provided with a second sealing projection 32, the second sealing projection 32 abutting the first sealing projection 23. In the present embodiment, the first sealing protrusion 23 is provided on the connection flange 2221 to be more fitted to the second sealing protrusion 32 on the seal ring 3. When the sealing ring 3 is sleeved on the conveying pipeline 2, the second sealing protrusion 32 abuts against the first sealing protrusion 23, and interference fit with the mounting groove 1212 can be achieved, so that reliability and tightness of clamping are further improved.

Preferably, the sealing ring 3 is further provided with a partition wall 33, and as shown in fig. 8 and 9, the partition wall 33 is disposed in the sealing flange 31 to form a buffer cavity 34, and the partition wall 33 can be attached to the bending part of the crimping flange 2211. Because the sealing ring 3 has elastic deformation capability, in the process of pushing the rolling connection flange 2211 to be clamped into the mounting groove 1212, the rolling connection flange 2211 stretches into the bottom of the mounting groove 1212, and then contacts the partition wall 33 and compresses the buffer cavity 34, so that the partition wall 33 is completely attached to and wraps the bending part of the rolling connection flange 2211, and the sealing performance of the sealing ring 3 is improved.

The mounting steps of the oil fume conveying mechanism in this embodiment are as follows:

1. installing a fan case 1, wherein the side wall 14 of the fan case 1 is attached to a wall body;

2. fitting the sealing ring 3 on the connecting flange 2221 of the conveying pipeline 2, and sleeving the sealing flange 31 outside the rolling flange 2211; the conveying pipeline 2 approaches the fan case 1 from bottom to top, as shown in fig. 10, and an arrow in the drawing indicates the moving direction of the conveying pipeline 2;

3. when the conveying pipeline 2 abuts against the bottom wall 13 of the fan case 1, the conveying pipeline 2 is pushed towards the wall body along the plane of the bottom wall 13, as shown in fig. 11, and the arrow in the figure indicates the moving direction of the conveying pipeline 2; until the rolling flange 2211 and the sealing flange 31 are clamped in the mounting groove 1212;

4. screws are mounted from below the fan case 1 along three sides of the fan case 1, which are not in contact with the wall, as shown in fig. 12, and the arrows in the figure indicate the mounting direction of the screws.

The embodiment of the utility model also provides a range hood, as shown in fig. 13, the range hood comprises the oil fume conveying mechanism, the range hood further comprises a fume collecting system 100, and one end, far away from the fan case 1, of the conveying pipeline 2 is connected to the fume collecting system 100. The fan case 1 and the conveying pipeline 2 are connected through the mutual clamping of the first installation part 121 and the second installation part 221 and the connection between the first connection part 122 and the second connection part 222, so that the installation of the conveying pipeline 2 and the communication sealing between the air inlet 11 and the air supply channel 21 are realized, the installation method is simple and efficient, the installation space is not limited, and the air tightness is good. After the fan case 1 and the conveying pipeline 2 are installed, one end of the conveying pipeline 2 far away from the fan case 1 is connected with the smoke collecting system 100, namely the integral installation of the range hood is completed, and the assembly and the disassembly are convenient.

Specifically, the fan case 1 is disposed above the room ceiling 200, the fan case 1 is detachably connected to the top wall 300, and one side wall 14 of the fan case 1 is attached to the side wall 400. The fan case 1 is arranged above the room suspended ceiling 200 and is far away from a user, and the room suspended ceiling 200 can isolate noise in the working engineering of the fan case 1, so that the influence of the noise on the user is reduced, and the use feeling is improved.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The utility model provides an oil smoke conveying mechanism, includes fan case (1) and pipeline (2), collection cigarette system (100) are connected to pipeline (2)'s one end, the diapire (13) of fan case (1) are provided with air intake (11), be provided with air supply channel (21) in pipeline (2), air supply channel (21) can communicate air intake (11), a serial communication port, a side wall (14) laminating wall body of fan case (1), fan case (1) is provided with first installation component (12), pipeline (2) are provided with second installation component (22), first installation component (12) are including enclosing to first installation department (121) and first connecting portion (122) of air intake (11), just first installation department (121) set up in air intake (11) are close to one side of wall body, second installation component (22) include second installation department (221) and second connecting portion (222), first installation department (121) and second joint portion (221) interconnect each other.

2. The oil smoke conveying mechanism according to claim 1, wherein the first mounting portion (121) comprises a fixing frame (1211), the fixing frame (1211) is connected to the bottom wall (13), the fixing frame (1211) is provided with a mounting groove (1212), the second mounting portion (221) comprises a rolling flange (2211), and the rolling flange (2211) can be clamped in the mounting groove (1212).

3. The oil smoke conveyor mechanism according to claim 1, wherein the first connection part (122) comprises a connection boss (1221), the connection boss (1221) is connected to the bottom wall (13), the second connection part (222) comprises a connection flange (2221), and the connection boss (1221) and the connection flange (2221) are detachably connected.

4. The oil smoke conveyor mechanism of claim 1, wherein the first connection portion (122) is provided with a plurality of first connection holes (1222), the second connection portion (222) is provided with a plurality of second connection holes (2222), and a fastener is threaded through the second connection holes (2222) to the first connection holes (1222).

5. The oil smoke conveying mechanism of claim 4, wherein a plurality of said first connecting holes (1222) are uniformly spaced apart, and a plurality of said second connecting holes (2222) and a plurality of said first connecting holes (1222) are arranged in a one-to-one correspondence.

6. The oil smoke conveying mechanism according to claim 1, wherein the air inlet (11) is a square hole, the conveying pipeline (2) is a square pipe, the first mounting portion (121) extends along one side of the air inlet (11), and the first connecting portion (122) extends along at least one of the remaining sides of the air inlet (11).

7. The oil smoke conveying mechanism according to claim 2, further comprising a sealing ring (3), wherein a sealing flange (31) is arranged on one side edge of the sealing ring (3), the sealing ring (3) is arranged between the fan case (1) and the conveying pipeline (2), the sealing flange (31) is sleeved on the outer side of the rolling flange (2211), and the sealing ring (3) surrounds the air inlet (11).

8. The oil fume conveying mechanism according to claim 7, wherein the conveying pipeline (2) further comprises a first sealing protrusion (23), the first sealing protrusion (23) is arranged on the second mounting assembly (22), the first sealing protrusion (23) extends along the circumferential direction of the air supply channel (21), the sealing ring (3) is provided with a second sealing protrusion (32), and the second sealing protrusion (32) abuts against the first sealing protrusion (23).

9. The oil fume conveying mechanism according to claim 7, wherein the sealing ring (3) is further provided with a partition wall (33), the partition wall (33) is arranged in the sealing flange (31) to form a buffer cavity (34), and the partition wall (33) can be attached to the bending part of the rolling flange (2211).

10. A range hood, characterized by comprising a fume conveying mechanism according to any one of claims 1-9, the range hood further comprising a fume collecting system (100), wherein one end of the conveying pipeline (2) far away from the fan case (1) is connected to the fume collecting system (100).